update = 5;
newplane = 5;
width = 30;
height = 21;

exit:	( 12  0 x ) (  0  6 d ) ( 29 12 a ) ( 26 20 q ) ;

beacon:	( 12  6 ) ;

airport: (  8 11 x ) ;

line:	[ ( 12  1 ) ( 12  5 ) ]
	[ (  1  6 ) ( 11  6 ) ]
	[ (  8  7 ) (  8 10 ) ]
	[ ( 28 12 ) ( 19 12 ) ]
	[ ( 13  7 ) ( 25 19 ) ] ;

